The motors used in handheld vacuum cleaners are usually of the following types:
Brushless DC (BLDC) motor: This motor is complex in design, but highly controllable and efficient. The stator and coils of the BLDC motor are fixed, and the permanent magnets are attached to the rotor. The rotor rotates with the circulating magnetic field, and the stator coils are controlled by an external electronic motor controller to produce variable speed.
Three-phase pulsed reluctance motor (PMSM): This motor uses sinusoidal commutation to help improve performance. It relies on a specific algorithm to control the stator rotating magnetic field and adjust the flux generator through two orthogonal components to determine the available torque.
Single-phase series-excited motor: This motor is small in size and has a high speed, making it suitable for use in vacuum cleaners. It can reach speeds of 20,000 to 40,000 rpm when rotating at no load, and is suitable for handling various suction requirements.
Each of these motor types has its own characteristics and applicable scenarios, which together ensure the efficient and stable operation of handheld vacuum cleaners.
